Strap for Lyre 40 Automatic Stainless Steel / Blue / Bracelet

The lug width of the Longines Lyre L4.961.4.92.6 is 21 mm. This measurement represents the internal distance between the spring bar attachment lugs on the case. To verify this correctly, use a calliper to measure between the inner edges of the lugs: it must be exactly 21 mm. This dimensional specificity is essential when ordering a compatible strap to ensure perfect fit without unwanted play or excessive tension.

For the Longines Lyre L4.961.4.92.6, alligator leather is the reference choice: the natural grain texture dialogues perfectly with the guillochéed dial, creating a synergy of rare elegance. Alternatively, vegetable-tanned calf offers a patina that matures over time; shell cordovan guarantees extraordinary durability; satin rubber represents the solution for dynamic environments without compromising aesthetic coherence. Your final choice depends on intended use and personal maintenance preferences.

Strap replacement requires specific tools: a spring bar tool and a stable work surface. Position the watch with the case facing upward, locate the attachment lugs beneath the spring bars, gently insert the spring bar tool into the small lateral hole and retract it. The spring bar will detach from the case. Repeat for both sides. Insert the spring bars into the new 21 mm strap, align and push them back into the case until they click. If you are not experienced with this procedure, Casati Milano offers a strap replacement service.

Yes, any strap with a 21 mm lug width is compatible with the Longines Lyre L4.961.4.92.6, provided it has the same standard spring bar attachment. The handcrafted straps from milanostraps.it are specifically manufactured for this dimension and are available in numerous materials (alligator, calf, shell cordovan, rubber). Casati Milano also offers bespoke strap creation with customisation of thickness, length and finish, ensuring perfect fit.

Durability depends on material, frequency of use and maintenance. A high-quality alligator or vegetable-tanned calf strap lasts an average of 3–5 years with daily wear; if worn occasionally, longevity extends to 7–10 years. Shell cordovan guarantees 8–12 years even with frequent use, thanks to superior fibre density. Regular maintenance (cleaning with damp cloth, conditioning with specialised creams) significantly extends useful life. Casati Milano guarantees 18 months on bespoke handcrafted straps.